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Hi I need help. with the hwh pump / motor, part number, my smart bad shorted out and extended by itself. Pining against my fence(where to by motors)
Don

I saw the Smart-Bed on our Apex move all by itself which is frightening. Turned out to be a crushed wire bundle between the touchpads on the front passenger side slide to the hydraulic compartment. Caught up in slide mechanism and shorted out intermittently. Fun to find.

You have two hydraulic pumps and believe me you don't want to have to have one replaced like I did while stuck slides out in an RV park in El Paso. Thank God for an excellent tech out of Las Cruces.

Questions:
Is the Smart-Bed still out?

Have you switched to the back-up pump? (Switch on panel in hydraulic compartment.) There is also a reset switch in there of unknown purpose.

Other Smart-Beds or slides move?

Do Smart-Beds move using big rocker switches in hydraulic compartment or service (water/sewer) compartment?

I suspect the expensive pump(s) is not your problem. There is a collective brain trust with vast experience on this forum. Hopefully someone has an answer.

generally when that happens there are three things to check.
switches, 12v relays , and pinched wires. do the 12v relay tests first.
use a 12 tester to check the relays first. the master relay should have 12 volts on one side only. there should not be any power on any other relay.
download a service manual for your system. it gives you a series of tests to do on the 12v relays.
if you want, please feel free to call me at 1-602-549-3638
i do work for hwh as a service tech. paul maddox